Resolution:

To correct this issue, first log in as an administrator on the NComputing hostClick Start and then click Run.
Type in "gpedit.msc"
Click "OK"
When the Group Policy Object Editor appears, navigate to:
Computer Configuration > Windows Settings > Security Settings > Local Policies > User Rights Assignment
In the right-hand pane, locate the entry named "Allow Log on through Terminal Services" and double-click on it.
Click "Add User or Group.."
Type "everyone" into the available text box and click "Check Names"
After the name is underlined, click OK
Click OK